About thirty days.

During the epidemic, the repayment of China Merchants Credit Card can be deferred, but only those who meet the conditions can defer the repayment. If the user is neither qualified by the bank to apply for a deferment of repayment for his or her credit card, nor does he meet the conditions for applying for a deferment of repayment, the user cannot defer the repayment. The user must apply for a deferment on the bill date or within a maximum of three days. Pay off your credit card balance within the deadline.